摘要
Abstract
Deep hole pre-splitting blasting forced caving is an effective method for prevention and treatment of large area roof weighting,the paper in view of Liangshuijing coal mine roof bedrock buried shallow,thin,overlying cover the characteristics of the desert in 42109 working face,for example,using PVC tube charge are summarized,yellow stemming,wedge block blast hole,millisecond delay detonator detonating cord blasting deep hole pre-splitting blasting forced caving technology,improve the blasting effect,reduces the initial pressure strength and weighting interval, realize the fully mechanized working face production safety.关键词
深孔预裂爆破/强制放顶/凉水井煤矿Key words
deep hole pre-splitting blastin/forced caving/liangshuijing coal mine分类
矿业与冶金
